Minggu, 09 Januari 2011

ScienceDaily Technology Headlines

for Sunday, January 9, 2011

Origin of life on Earth: 'Natural' asymmetry of biological molecules may have come from space(January 7, 2011) -- Certain molecules do exist in two forms which are symmetrical mirror images of each other: they are known as chiral molecules. On Earth, the chiral molecules of life, especially amino acids and sugars, exist in only one form, either left-handed or right-handed. Why is it that life has initially chosen one form over the other? Now researchers have for the first time obtained an excess of left-handed molecules (and then an excess of right-handedones) under conditions that reproduce those found in interstellar space. This result therefore supports the hypothesis that the asymmetry of biological molecules on Earth has a cosmic origin. The researchers also suggest that the solar nebula formed in a region of massive stars. ... > full story

Andromeda’s once and future stars(January 7, 2011) -- Two European Space Agency observatories have combined forces to show the Andromeda Galaxy in a new light. Herschel sees rings of star formation in this, the most detailed image of the Andromeda Galaxy ever taken at infrared wavelengths, and XMM-Newton shows dying stars shining X-rays into space. ... > full story

Health chip gives instant diagnoses(January 7, 2011) -- Soon, your family doctor will no longer have to send blood or cancer cell samples to the laboratory. A little chip will give her test results on the spot. ... > full story

Sulfur proves important in the formation of gold mines(January 7, 2011) -- Collaborating with an international research team, an economic geologist has discovered how gold-rich magma is produced, unveiling an all-important step in the formation of gold mines. Robert Linnen found sulfur enhances gold's solubility, and solubility is an important step in forming a gold deposit. The study could lead to a breakthrough in choosing geographic targets for gold exploration. ... > full story

Longstanding mystery of Sun's hot outer atmosphere solved(January 7, 2011) -- One of the most enduring mysteries in solar physics is why the Sun's outer atmosphere, or corona, is millions of degrees hotter than its surface. Now scientists believe they have discovered a major source of hot gas that replenishes the corona: jets of plasma shooting up from just above the Sun's surface. ... > full story

Solar research instrument 'fills the gap,' views sun's innermost corona(January 7, 2011) -- During a total eclipse of the sun, skywatchers are awed by the shimmering corona -- a faint glow that surrounds the sun like gossamer flower petals. The corona becomes visible only when the sun is blocked, which happens for just a few minutes during an eclipse. Now, an instrument on board NASA's Solar Dynamics Observatory is giving unprecedented views of the innermost corona 24 hours a day, seven days a week. ... > full story

Digital reminiscence systems: Life-logging assists dementia sufferers, research finds(January 7, 2011) -- Digital reminiscence systems could improve quality of life for people with mild dementia, according to new research. Dementia is on the increase, but for the sake of the quality of life of sufferers and their family and friends finding ways to allow the patient to remain in their own home and to live independently is an issue that must be addressed. At the same time, enabling independent living could also reduce the economic burden. ... > full story

Carbon swap bank to beat climate change, Australian researchers propose(January 6, 2011) -- Australian researchers have suggested that nations should abandon the concept of carbon emissions trading in favor of a carbon swap bank that might lead to genuine reductions in the amount of carbon dioxide greenhouse gas entering the atmosphere and so provide a mechanism for reducing climate change. ... > full story

Is your convertible damaging your hearing?(January 6, 2011) -- Driving convertible cars with the top open at speeds exceeding 88.5 kilometres per hour (55 miles per hour) may put drivers at increased risk of noise-induced hearing loss, according to new research. ... > full story

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